drbd-9.1.22-rc.1 and drbd-9.2.11-rc.1

[GM]

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On Mon, 12 Aug 2024 at 10:36, Ralph Ort <ralph.ort at tec-brain.de> wrote:

> Dear all,
> thanks for all the efforts over the years.
> Mind you, please, removing me from the DL?
> have a great time, cheers
> Ralph
>
>
> > Am 05.08.2024 um 15:22 schrieb Philipp Reisner <
> philipp.reisner at linbit.com>:
> >
> >
> > Hello DRBD-users,
> >
> >
> > A detail I never cared about is if a syscall gets restarted or returns
> > EINTR after the arrival of a signal. What made me learn this detail is a
> > customer whose system newly created processes get a signal. Often, a
> > process open()s the resources it needs to work with first, and in this
> > occation, that was a drbd device.
> >
> > When auto-promote is enabled (which it is by default), DRBD will promote
> > the drbd device to primary in the open() system call of a user space
> > process. It needs to exchange some network packets, which can easily
> > take milliseconds.
> >
> > Now, when a (non-fatal) signal arrived at just that moment, DRBD
> > dutifully interrupted the promote operation and returned to user space,
> > with an errno indicating that the device was not primary.
> >
> > And here is the problem for a random user-space process, it got an
> > unexpected errno from open() and terminated.
> >
> > Then, I learned about EINTR and restartable syscalls. Starting with this
> > release, DRBD will restart the open() syscall in such a scenario unless
> > the user prepared to receive an EINTR from open() by calling sigaction()
> > and omitting SA_RESTART before.
> >
> > Please help test the release candidate.
> >
> > 9.2.11-rc.1 (api:genl2/proto:86-122/transport:19)
> > --------
> > * Changed merged rom 9.1.22
> >  - Upgrade from partial resync to a full resync if necessary when the
> >    user manually resolves a split-brain situation
> >  - Fix a potential NULL deref when a disk fails while doing a
> >    forget-peer operation.
> >  - Fix a rcu_read_lock()/rcu_read_unlock() imbalance
> >  - Restart the open() syscall when a process auto promoting a drbd
> device gets
> >    interrupted by a signal
> >  - Remove a deadlock that caused DRBD to connect sometimes
> >    exceptionally slow
> >  - Make detach operations interruptible
> >  - Added dev_is_open to events2 status information
> >  - Improve log readability for 2PC state changes and drbd-threads
> >  - Updated compability code for Linux 6.9
> >
> >
> > https://pkg.linbit.com//downloads/drbd/9/drbd-9.1.22-rc.1.tar.gz
> >
> https://github.com/LINBIT/drbd/commit/d10418bf63f0b664305d9bd4779cb48965d434f5
> >
> > https://pkg.linbit.com//downloads/drbd/9/drbd-9.2.11-rc.1.tar.gz
> >
> https://github.com/LINBIT/drbd/commit/c52d24bca2b1c659bfba19d19602c7e319c7416d
> >
>
>
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